<template>
  <div class="login_container">
    <div class="login_box">
      <!--头像区域 -->
      <div class="avatar_box">
        <img src="../assets/logo.png">
      </div>
      <!-- 登陆表单区域-->
      <el-form label-width="0" class="login_from" :model="loginForm" :rules="loginFormRules" ref="loginFormRef">
      <!-- 用户名       -->
        <el-form-item  prop="username">
          <el-input prefix-icon="iconfont icon-user" v-model="loginForm.username"></el-input>
        </el-form-item>
        <!-- 密码       -->
        <el-form-item prop="password">
          <el-input prefix-icon="iconfont icon-3702mima" v-model="loginForm.password" type="password"></el-input>
        </el-form-item>
        <!--按钮区域        -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登陆</el-button>
          <el-button type="info" @click="restLoginFrom">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
  export default {
    name: "Login",
    data(){
      return {
        //表单绑定的数据
        loginForm:{
          username:'admin',
          password:'123456'
        },
        //表单的验证规则
        loginFormRules:{
          //验证用户名
          username: [
              { required: true, message: '请输入用户名称', trigger: 'blur' },
              { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
          ],
          //验证密码
          password: [
            { required: true, message: '请输入用户密码', trigger: 'blur' },
            { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
          ]
        }
      }
    },
    methods:{
      //点击重置表单
      restLoginFrom(){
        this.$refs.loginFormRef.resetFields()
      },
      //
      login(){
        this.$refs.loginFormRef.validate(async vaild => {
          if(!vaild) return;
          const {data:res} =  await this.$http.post('login',this.loginForm);
          console.log(res)
          if(res.meta.status !== 200){
            this.$message.error("登陆失败")
          }else{
            this.$message.success("登陆成功");
            //登陆成功后将token，保存到客户端的sessionStrage中
            window.sessionStorage.setItem('token' , res.data.token );
            //通过编程式导航跳转到后台主页  路由地址 /home
            this.$router.push("/home")
          }
        })
      }
    }
  }
</script>

<style scoped>
  .login_container{
    background-color: #2b4b6b;
    height: 100%;
  }
  .login_box{
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius:3px;
    position: absolute;
    left: 50%;
    top: 50%;
    /*位移*/
    transform: translate(-50%,-50%);
  }
  .avatar_box{
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%,-50%);
    background-color: #fff;
  }
  .avatar_box img{
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: #eee;
  }
  .btns{
    display: flex;
    justify-content: flex-end;
  }
  .login_from{
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
  }
</style>